19802416

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{1549}}^1$

素因数の和:1621

約数の個数: 40

約数和(自身を含む): 41515200

約数和(自身を除く): 21712784

約数列:

[1, 2, 4, 8, 16, 17, 34, 47, 68, 94, 136, 188, 272, 376, 752, 799, 1549, 1598, 3098, 3196, 6196, 6392, 12392, 12784, 24784, 26333, 52666, 72803, 105332, 145606, 210664, 291212, 421328, 582424, 1164848, 1237651, 2475302, 4950604, 9901208, 19802416]

約数ペア:

[(1, 19802416), (2, 9901208), (4, 4950604), (8, 2475302), (16, 1237651), (17, 1164848), (34, 582424), (47, 421328), (68, 291212), (94, 210664), (136, 145606), (188, 105332), (272, 72803), (376, 52666), (752, 26333), (799, 24784), (1549, 12784), (1598, 12392), (3098, 6392), (3196, 6196)]